Pipe-coupling.



Niinrrnn siATns rnriinr orricn.

FRANK C. PAHLOW, DETROIT, MICHIGAN, ASSGNOR ONE-HALF TO ANTONIO C.PESSANO, 0F DETROIT, VMICHIGLAN.

PIPE-Gourmand.

. Specification of Letters latent.

Fatented Nov. 9, 1909.

Application iled May 22, 1908. Serial No. 434,307.

and State of Michigan, have invented cer-l tain new and usefulImprovements in Pipe- Couplings, of which the following is aspecihcation, reference being had therein to the accompanyin` drawings.

, l? b l`he invention relates generally to a pipe coupling, especiallydesigned for use in theV present inst-ance for connecting adjoininglengths of flexible piping, such as a hose,

and the invention consists primarily in the novel construction of acoupling of this character wherein the pipe lengths may be more` rapidlyand effectively connected than heretofore, and it consists further inthe peculiar arrangement and combination of the'v various parts of thecoupling as will be hereinafter set forth. y

In the drawings illustrating the invention,-Figure l is a view inelevation of my improved coupling; Fig. 2 is a vertical central sectionthrough the coupling, showing the same applied to the pipe lengths to bejoined; Fig. 3 is a perspective view of the tubular clamp, the partsbeing detached; and Fig. 4 is a detached sectional view of the sleeve.

In the drawings thus briefly described, A and B represent sections ofthe hose to be coupled together, and C is the coupling therefor.

In construction, the coupling comprises complementary tubular clamps,adapted to be applied to the meeting ends of the pipe or hose. Eachclamp is composed of a tapered thimble, as E, and acorrespondingly-tapered wedge ring F, the rings having smoothcylindrical outer surfaces forming bearings for the coupling members andH. The latter members are preferably in the form of tubular nuts, andare mounted upon the wedge rings of the clamps for free rotary andsliding movement. Each nut'is formed with a shoulder e, which abutsagainst the rear end of its respective wedge ring, and at its forward ormeeting end with a reduced section j, externally threaded, as at g, thethreads upon the adjoining portions of the coupling members beingpitched in the saine direction for a purpose hereinafter set forth.

I represents a coupling sleeve, internally screw-threaded and engagingthe reduced Aengagement by the coupling sleeve.

and externally threaded section of the coupling nuts H and G.

ln applying the coupling, the coupling nuts and wedge rings of theclamps are iirst applied to the hose ends in the order described, one ofthe nuts carrying the coupling sleeve thereon. The tliimble sections ofthe clamps are then inserted within the meeting ends of the hose,preferably in such inanner as to leave the extreme ends of the hosesections projecting therebeyond. The clamps are then applied by forcingthe wedge rings upon the thimble sections, and the coupling membersbrought together to permit of their Upon turning the coupling members inopposite directions, the desired coupling is effected.

It will be observed from the particular ar- Arangement of the threadsthat in the operation of coupling the sleeve is practically stationary,while the coupling nuts turn in opposite directions, thls movementpermitting the coupling to bc effected without twisting the hose or pipelengths. Further, the smooth cylindrical surfaces of the wedge ringsafford smooth bearings upon which the coupling members may rotate orslide, thus permitting the easy manipulation of the members during theoperation of coupling. Finally, the projecting portions of the hosebeyond the clamps form in connection with one another a gasket betweenthe parts, thus making a tight and efficient joint.

What I claim as my invention is,-

l. In a coupling, the combination with adjoining sections of hose, oftubular clamps applied to the hose ends leaving meeting portions of thehose between the clamps, each of said clamps consisting of a taperingthiinble and a correspondingly tapered wedge ring encircling said hose,tubular coupling nuts swiveled upon said rings, each of said nuts havinga reduced externally threaded inner end and the outer end beingfashioned to form a hand grip, and an internally threaded couplingsleeve engaging the reduced threaded sections of the coupling members.

2. In a coupling, the combination with adj oining sections of hose, oftubular clamps applied to the hose ends, leaving meeting portions of thehose between the clamps, each of said clamps consisting of a taperingthimble within the hose end, a correspondingly tapered wedge ringencircling said hose and having a smooth cylindrical outer surface,tubular coupling nuts siviveled upon said rings, each of said couplingnuts being formed with a shoulder `abutting against the rear end of itsArespective ring and having a reduced externally threaded inner end andthe outer end fashioned to form a hand grip, the threads of both of saidnuts being pitched in the same direction, and an internally threadedcoupling sleeve engaging the reduced threaded sections of the couplingmembers, said coupling mits and said sleeve being so shaped and arrangedthat the outer surfaces longitudinally of said members form asubstantially uniform curved surface.

3. In a coupling, the combination with adjoining sections of hose, oftubular clamps applied to the hose ends leaving meeting portions of thehose between the clamps, each of said clamps consisting of a taperingthimble and a correspondingly tapered wedge ring encircling said hose,tubular coupling nuts swiveled upon said rings, each of said nuts beingformed with a shoulder abutting against the rear end of its respec tivering and having an externally threaded inner end and the outer end beingfashioned to form a hand grip, the threads on both of said nuts beingpitched in the same direction, and an internally threaded couplingsleeve engaging the externally threaded portions of the couplingmembers.

fl. In a coupling, the combination with adjoining sections of a hose,clamps applied to the hose ends leaving meeting portions of the hosebetween the clamps, each of said. clamps consisting of a thimble and acorresponding Wedge ring encircling said hose,

coupling nuts siviveled upon said rings, each I provided With a shoulderabutting against the rear end of its respective ring and hav ing anexternally threaded inner end, the threads on both of said nuts beingpitched in the same direction, and an internally threaded couplingsleeve engaging the external threaded portions of the coupling members.

5. In a coupling, the combination with adjoining sections of hose, oftubular clamping nuts applied to the hose ends, lea\f'ing f,

meeting portions of the hose between thc clamps, each of said clampsconsisting of a tapering thimble within the hose end, and acorresponding tapered wedge ring encircling said hose and having asmooth cylindrical outer surface, tubular couplingnuts swivcled uponsaid Wedge rings, each having` a recessed inner face engaging itsrespective wedge ring whereby a shoulder is formed ,abutting against therear end of the ring.

FRANK C. PAHLOIV.

Witnesses DWIGHT TRUE, CHARLES SHORT.

